How to Initialize a Dynamic Array in C++? Last Updated : 31 Jan, 2024 Comments Improve Suggest changes Like Article Like Report In C++, dynamic arrays allow users to allocate memory dynamically. They are useful when the size of the array is not known at compile time. In this article, we will look at how to initialize a dynamic array in C++. Initializing Dynamic Arrays in C++The dynamic arrays can be initialized at the time of their declaration by using list initialization as shown: data_type* pointer_variableName = new data_type[ array_size] {element1, element2, ...} ;C++ Program to Initialize Dynamic Arrays C++ // C++ program to demonstrates the initialization of a // dynamic array using a new keyword. #include <iostream> using namespace std; int main() { int size = 5; // initializing a dynamic array int* arr = new int[size]{ 1, 2, 3, 4, 5 }; // printing the array elements cout << "Elements of the array are: " << endl; for (int i = 0; i < size; i++) { cout << arr[i] << " "; } // freeing-up memory space by deleting arr delete[] arr; return 0; } OutputElements of the array are: 1 2 3 4 5 Note: If we create a dynamic array without specifying initial values, the elements will not be initialized, and their values will be undefined. Comment More infoAdvertise with us Next Article C++ Programming Language V vivekchaudharyy Follow Improve Article Tags : C++ Programs C++ cpp-array Dynamic Memory Allocation C++-new and delete C++ Array Programs CPP Examples +3 More Practice Tags : CPP Similar Reads C++ Programming Language C++ is a computer programming language developed by Bjarne Stroustrup as an extension of the C language. It is known for is fast speed, low level memory management and is often taught as first programming language. It provides:Hands-on application of different programming concepts.Similar syntax to 5 min read Non-linear Components In electrical circuits, Non-linear Components are electronic devices that need an external power source to operate actively. Non-Linear Components are those that are changed with respect to the voltage and current. Elements that do not follow ohm's law are called Non-linear Components. Non-linear Co 11 min read Spring Boot Tutorial Spring Boot is a Java framework that makes it easier to create and run Java applications. It simplifies the configuration and setup process, allowing developers to focus more on writing code for their applications. This Spring Boot Tutorial is a comprehensive guide that covers both basic and advance 10 min read Object Oriented Programming in C++ Object Oriented Programming - As the name suggests uses objects in programming. Object-oriented programming aims to implement real-world entities like inheritance, hiding, polymorphism, etc. in programming. The main aim of OOP is to bind together the data and the functions that operate on them so th 5 min read Class Diagram | Unified Modeling Language (UML) A UML class diagram is a visual tool that represents the structure of a system by showing its classes, attributes, methods, and the relationships between them. It helps everyone involved in a projectâlike developers and designersâunderstand how the system is organized and how its components interact 12 min read Python Variables In Python, variables are used to store data that can be referenced and manipulated during program execution. A variable is essentially a name that is assigned to a value. Unlike many other programming languages, Python variables do not require explicit declaration of type. The type of the variable i 6 min read Spring Boot Interview Questions and Answers Spring Boot is a Java-based framework used to develop stand-alone, production-ready applications with minimal configuration. Introduced by Pivotal in 2014, it simplifies the development of Spring applications by offering embedded servers, auto-configuration, and fast startup. Many top companies, inc 15+ min read Backpropagation in Neural Network Back Propagation is also known as "Backward Propagation of Errors" is a method used to train neural network . Its goal is to reduce the difference between the modelâs predicted output and the actual output by adjusting the weights and biases in the network.It works iteratively to adjust weights and 9 min read Polymorphism in Java Polymorphism in Java is one of the core concepts in object-oriented programming (OOP) that allows objects to behave differently based on their specific class type. The word polymorphism means having many forms, and it comes from the Greek words poly (many) and morph (forms), this means one entity ca 7 min read Dynamic Memory Allocation in C using malloc(), calloc(), free() and realloc() In C, a variable defined in a function is stored in the stack memory. The requirement of this memory is that it needs to know the size of the data to memory at compile time (before the program runs). Also, once defined, we can neither change the size nor completely delete the memory.To resolve this, 9 min read Like